package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class LoginDemo {
    public static void main(String[] args) throws SQLException {
        Scanner scanner= new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username = scanner.nextLine();
        System.out.println("请输入密码:");
        String password = scanner.nextLine();
        Connection conn = DBUtil.getConnection();
        Statement statement = conn.createStatement();
        String sql = "SELECT usernamr, password " +
                     "FROM userinfo " +
                     "WHERE username='"+username+"' " +
                     "AND password ='"+password+"'";
        System.out.println(sql);
        ResultSet rs = statement.executeQuery(sql);
        if (rs.next()){
            System.out.println("登录成功");
        }else {
            System.out.println("登录失败");
        }
        conn.close();
    }
}
